If they acn afford a $40,000 car in the first place they aren't going to give a shit how much the oil price goes up - they'll just pay it.
Hopefully in about five or ten years time we'll be using an alternative source of fuel in cars anyway. At least I hope we will.
The chance of there not being another recession in the next ten years is pretty remote IMO... we are WAY overdue for one right now based on history.
If oil continues to rise then inflation will skyrocket - the cost of making and distributing products is linked very closely to the price of oil. The response of central banks is ALWAYS to raise interest rates to curb demand. The general result is higher unemployment as demand drops because money is tighter.
Many people who can currently afford a large gas guzzler may find themselves paying more for everything not only gas in 5 years. They may not have a job either...
Don't forget the prices of gas in america as well as many other products has been artifically lower then the rest of the world for many many years. I doubt that will continue personally... the big car party might be over